<?php
   $mysql->query("Select * From post where category='gioithieu'");
                                       while($row=$mysql->fetchRow()){
                                  
                                    ?>
                                         <div class="show_post_r">
                                            <h3><?php echo $row[title];?></h3>
                                             <p>
                                               <?php echo urldecode($row[primary]);?>
                                             </p>
                                         </div><!--end #show_post-->
<?php
    $mysql->disconnect();
   }

?>